1212121000202 has 32 divisors (see below), whose sum is σ = 2200217748480. Its totient is φ = 488908235520.

The previous prime is 1212121000193. The next prime is 1212121000231. The reversal of 1212121000202 is 2020001212121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11990324 + ... + 12090992.

It is an arithmetic number, because the mean of its divisors is an integer number (68756804640).

Almost surely, 2^{1212121000202} is an apocalyptic number.

1212121000202 is a deficient number, since it is larger than the sum of its proper divisors (988096748278).

1212121000202 is a wasteful number, since it uses less digits than its factorization.

1212121000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151286.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1212121000202 its reverse (2020001212121), we get a palindrome (3232122212323).

The spelling of 1212121000202 in words is "one trillion, two hundred twelve billion, one hundred twenty-one million, two hundred two", and thus it is an aban number.